The journey of a drug from a simple idea to the pharmacy counter lasts 10-15 years, and includes preclinical and clinical studies, as well as post-marketing studies after it goes on sale. All three stages are quite costly, and on top of that, not all drugs make it to the last stage, for various reasons, do not prove their clinical efficacy or their unsafe qualities are identified for which the product cannot be marketed, but the costs of failed projects have already been incurred and they are a burden on the price of the drug that proved successful.
What is a generic
